CONSOLIDATED BALANCE SHEETS PARENTHETICAL - USD ($) shares in Millions, $ in Millions	May 31, 2023	May 31, 2022
Statement Of Financial Position [Abstract]
Allowance for credit losses	$ 428	$ 362
Preferred stock par value per share	$ 0.01	$ 0.01
Preferred stock shares authorized	1.0	1.0
Preferred stock shares outstanding	0.0	0.0
Common stock par value per share	$ 0.01	$ 0.01
Common stock shares authorized	11,000.0	11,000.0
Common stock shares outstanding	2,713.0	2,665.0